Dockerfile

# Use official Python image
FROM python:3.9

# Unbuffered output
ENV PYTHONUNBUFFERED=1

# Install necessary system dependencies
RUN apt-get update && apt-get install -y \
    tesseract-ocr \
    tesseract-ocr-eng \
    libtesseract-dev \
    libleptonica-dev \
    pkg-config \
    poppler-utils \
    && rm -rf /var/lib/apt/lists/*

# Set the working directory in the container
WORKDIR /code

# Copy requirements.txt to the container
COPY ./requirements.txt /code/requirements.txt

# Install Python dependencies
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

ENV PATH="/usr/local/bin:${PATH}"

# Create a non-root user
RUN useradd -m -u 1000 user
USER user

# Set the home and path environment for the new user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Change to app directory under the new user
WORKDIR $HOME/app

# Copy app code to the container and set ownership to the user
COPY --chown=user . $HOME/app

# Command to run the Flask app via Gunicorn on port 7860
CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app"]